Ratchet-drill



(No Model.) 2 Sheets-Sheet 1. W. SANDIPORD;

RATGHETDRILL; No. 264,107. Patented Sept. 12, 1882 m f n a r o M .m c n1 M Z J n I 0 C P D 4y 7: m L o A H2222;:22 l w UH m ,6 a m I .4 s m J.v .l M N I... A .M 6 P w z .6 I m H H Pl-.. 4 S J- n o m -----I--- A L TU E l B e Iv s S, e n yo I l( W (No Model.) '2 Sheets-Sheet 2. W.SANDIFORD.

RATGHET DRILL. No. 264,107. I Patented Sept. 12, 1882.

llL a-ajl-iwtchz ns- L I i lam-5a gz d iorvl UNITED STATES \VILLTAMSANDIFORD,

PATENT OFFIQEQ O F JOLIET, ILLINOIS.

RATCH ET-D R l LL.

SPECIFICATION forming part .of Letters Patent No. 264,107, datedSeptember 12, 1882.

Application filed December 31, 1881.

To all whom it may concern:

Be it known that 1, WILLIAM SANDIFORD, of the city of Joliet, in Willcounty, and State of Illinois, have invented certain new and usefulImprovements in Ratchet-Drills, the construction and operation of whichI will proceed to explain, reference being bad to the annexed drawingsand the letters and figures thereon, in which- Figure l is a verticalcentral section, and Fig. 2 an end elevation.

The nature of my invention consists in the construction and arrangementof a ratchetdrill, as will be hereinafter more fully set forth.

Referring'to the drawings, A represents the main frame of the drill,depressed somewhat atthe top to prevent pressure causing the frame tospread, and extending downward to support the drill-shaft y, and at oneside at right angles with its other extension to support thedriving-shafts S and S. The driving-shaft S is provided at its outer endwith the ratchetwheel 6 and at its inner end with the miterwheel 1",both of which are firmly keyed to it or held firm by set-screws. Thehollow driving-shaft S is sleeved upon the driving-shaft S, and is alsoprovided at its outer end with the ratchet-wheel c and at its inner endwith the miter-wheel 1", both firmly fixed thereto by means of keys orset-screws. The upper end of the drilLshaft y is provided with themiterwheel 4*, firmly fixed to it, and which meshes with both the othermiter-wheels 1" and r, and from them receives a continuous forwardrotary motion.

Theoperating-leverB is boxed upon the outer endofthe driviugshaft Sbetween the ratchetwheels 6 and e, and is provided with the two pawls 0and 0, arranged one on either side of the operating-lever B, so that thepawl 0 engages with the teeth of the ratchet e and the pawl o engageswith the teeth of the ratchet c. The teeth of the ratchets e and e areturned in opposite directions. It will be readily seen that by movingthe operating-lever B in one direction the pawl 0, operating on theratchet 6, will rotate the driving-shalt S, and as the miter-wheel r isattached to said driving-shaft S it will rotate the miter-wheel 1" andwith it the drill-shaft 3 As the operating-lever B is moved in theopposite direction the pawl 0 (N0 model.)

engages with the ratchet-wheel e, which rotates the hollow driving-shaftS, and the miter- 7 wheel 1', which meshes with the miter-wheel r on theupper end of the drill-rod y, and rotates the said drill-rod y in thesame direction it was rotated by the reverse motion of theoperating-lever B, so that as the operatinglever B is moved back andforth it imparts a continuous rotary motion to the drill in the samedirection.

In Fig. 2, B is an extensible sleeve on the operating-lever B, tolengthen it to any desired length, and held at any place by theset-screw at itslower end.

The springs 11 and n, that operate on the pawls o and 0, to hold themdown to work, may be turned backward, as shown in said Fig. 2 in thedotted lines, to relieve the pawl from pressure on the ratchets, or onone ofthe ratchets, when the adjustable crank a is attached to theoperating-lever B, and it is rotated forward continuously instead ofoperating the operating-lever B back and forth, as stated, so that theratchet not in use will not be worn by its pawl needlessly. Thesteadying-handle F has an eye at its inner end, which lits over thelower hub or projection of the frame A loosely. The eye ofsaid handle Fis cut and provided with gripes and a bolt, F, passing through saidgripes to hold them together, by means of which arrangement the handle Fmay be held firmly at any place or any position desired. washer, z, isplaced on the drill-shaft 3 between the frame A and the shoulder of thesaid drillshaft y, as shown in Fig. 2, so as to prevent friction andwear of the parts.

The arrangement to feed the drill to its work consists of the barrel P,being a continuation and a portion of the frame A, and threaded on itsinner surface to receive the feed-screw c,

to which screw 0 is attached a cap, D,by means a pin, 0, at its upperend, by means of which cap D the feed-screw is rotated to drive themachine to its work, the point at the upper end of the feed-screw 0being placed against some resisting object. The cap D not only forms aconvenient object for the hand to grasp to rotate the feed-screw 0, butforms a shield or cover-to the other parts to keep them free from dirtor injury.

The sleeve to on the shaft S is to preventa A loose nearer approach ofthe miter-wh eels r and r to each other.

Having thus described my invention, What I claim as new, and desire tosecure by Letters 5 Patent, is as follows, to wit:

1. 1n the ratchet-drill described, in combination with the frame A, thehollow shaft S, h aving the miter-Wheel 1' and ratchet e, rigidly fixedthereto and sleeved upon the shaft S, having the miter-wheel r andratchet e, rigidly fixed thereto, miter-wheel 1', drill-spindle y. leverB, boxed upon the shaft S and provided with the reversed spring-pawls 0and 0, and feed consisting of the barrel P, screw 0, and cap D, allarranged to operate in the manner and for the purpose set forth.

2. In the ratchet-drill described, the combination of the frame A,bevel-gears r r r, shafts S and S, ratchets e and e, reversedspring-pawls 0 and o, lever B, provided with the adjustable crank-handlea, steadying-handle F, drill-spindle 11 and feed consisting of thebarrel 1, feed-screw 0, and cap D, all arranged to operate in the mannerand for the purpose set forth.

\VILLIAM SANDIFORD.

lVitnesses:

Tnos. H. HUTCHINS W. E. OOMSTOGK.

